Proto J7274 86 Pc Deep Impact Socket Set 1/2 3/8 Drive

Product Description

The PROTO J7274 is an 86-piece deep impact and standard socket set designed for heavy-duty fastener work in professional trade environments. The set covers both 1/2 inch and 3/8 inch drive sizes and spans a range from 5/16 inch up to 1-1/4 inch in SAE, plus 9 mm through 27 mm in metric. All sockets are 6-point, which distributes torque more evenly across fastener flats and reduces the risk of rounding. Built from steel construction throughout, this set is suited for impact wrench use as well as hand ratchet applications. Automotive technicians, HVAC service mechanics, and maintenance electricians working with structural fasteners are the primary installers.

This socket set fits residential and commercial service applications where both SAE and metric fasteners are encountered in the same job. The deep socket profile accommodates threaded studs and recessed fastener heads that standard-depth sockets cannot reach. The 3/8 inch drive sockets cover metric sizes 9 mm through 19 mm and SAE deep 6-point from 5/16 inch to 3/4 inch plus SAE standard 6-point from 5/16 inch to 11/16 inch. The 1/2 inch drive sockets cover SAE deep 6-point from 5/16 inch to 3/4 inch, SAE standard 6-point from 3/8 inch to 3/4 inch, and metric sizes 9 mm through 19 mm in both deep and standard profiles.

Key Features

• 86-piece set combines deep and standard socket profiles in a single kit
• Both 1/2 inch and 3/8 inch drive sizes included
• 6-point socket design reduces fastener rounding under high torque
• Full SAE and metric coverage in one set
• Steel construction rated for impact tool use
• Lifetime warranty

Compatibility

Designed for use with standard 1/2 inch and 3/8 inch drive ratchets, breaker bars, and impact wrenches. Specific vehicle or equipment model compatibility depends on the fastener sizes present at the job site.

Installation Notes

Always verify drive size match between the socket and the tool before applying torque. When used with an impact wrench, confirm the sockets in this set are rated for impact use before applying pneumatic or electric impact force. Store sockets in their tray or rail after use to prevent loss and maintain organization. Follow applicable shop safety practices and personal protective equipment requirements when operating impact tools.